na-adjective, noun
complex; complicated; intricate; mixed (feelings)
Describes something with many interconnected parts, difficult to understand or resolve. Also used for emotions that are not straightforward, such as 複雑な気持ち (mixed feelings). Antonym: 単純 (simple).
Antonyms: 単純
この問題はとても複雑で、解決が難しい。
This problem is very complex and hard to solve.
彼の説明は複雑すぎて、何を言っているのかわからなかった。
His explanation was too complicated, and I couldn't understand what he was saying.
複雑な気持ちで、嬉しいけど少し寂しい。
I have mixed feelings—happy but a little lonely.